Antiskid device



W. BERNDT.

ANTISKID DEVICE.

APPLICATION FILED SEPT-13. 1920.

Patented Mar. 14,1922.

[NI/ENTOE M/AL L/AM BEE v ,4/5 ATTORNEYJ UNITE!) T S WM rma 'W ILLIAM BERNDT, or HAMELiILZrNN sOIn, liss'refnon OEHON-EHALF To HA RY DURIWIEILEB, or HAMEL, MINNESOTA.

7 An'rrsmn DEVICE."

, Specification of Letters Patent; Patented Bl 14 1922.

- Application filed September 13,1920. Sria1 1 1'o.j409,921;

nection .with wheels of automobiles and trucks which are provided'with rubber tires, solid or pneumatic. The function of this device, as of other devices of this general class, is to afford a better traction to the rubble-r tired vehicle wheelswhen the roadbe'd is soft-or wet. With more particularity,

it relates to an improved means for clamping the tread element to a wheel spoke.

Threaded bolts, .screws and wing-nuts are usuallyemployed to secure together the parts of the comm'on'form of spoke clam-p. Dirt,

moisture 4 and .mu dggathen upon "such" thread.

ed portions du'e' to' theJVery eause for the use efitliese devices, and subsequent removal of the clamp is always disagreeable and sometimes difficult. Furthermore, these threaded -parits:are,of:course, closely adj acent the wheel *peripherlv and therefore the threads are frequently injured and upset under working con- --ditionsby rocks, stones and other road ob- --structions. Subsequent remova'l is diflicult,

if itdoes not entail destruction of the "threads. In this novel device, a lever is employed to seenre the two parts *of'the clamp in locked position. Furthermore, the-novel construction of this device is such that this --been disclosed a structure de'signed'to carry out theobjects of the invention, bu-t'it ist'o a be understood-thatthe invention vis not coni In thezdrawings z 7 is a partial section through a pneu matic-tired wheel having the device secured" thereto; I a

Fig. 2 is a'view in sideelevation of the device in working position on a wheel:

Fig. 3 is a plan view of the device in posit-ion and witht-he spoke shown in section; Fig. 4 is an enlarged section on the'line 4-4; of Fig. 3, but with the spoke omitted;

Fig.5 is a perspective of the two parts of the clamp: in separated position a'ndw'ith the tire chain omitted. g

In this preferred form-0f the invention, the tread=engaging element is flexiblabein here shown as a chain 6 adapted to extend across the wheel tread'an'd to beterminally secured to the clamp.

The clamp. comprisestwo parts which are separable in order that vtl'ie device may readily be mounted upon a wheel. These parts maybe hereafter'referred-to, for'p'urposes. of description, as the lever part and the hook part; The hook 'part is substa'm 13121113 elongatedgand'v is arcu'a'tely -.curved at its middle portion 7. One end of-this hook to I partisprovided with 'a=hooli- '8wl1ile the other end isprovicled with 'a sl'ot or npe'rture 9 toreceive atongue com lementaril formed on the lever partoftheclamp The 5 two parts of this separable clamp areadapted'to be hingedly conneete'd-togetherby this tongue and slot connection.

The lever part is likewise substantially elongated and has an arcu'atel-y" curved middle portion 10. These 'curve'd portions .7

and 10 are co-operably adapte dto embrace 'a' wheel spoke 11 when in position on 'a .vehicle wheel. The lever part bears at one end a tongue 12 which isdeni'ountab'ly receivable in the aperture 9. The other end ofthis part is provided with ashonlder'13 which bears a pivot" pin 14 by which the. lever- 15.

is carried by this lever-part; The innerend of the lever 15 is preferably forked and pivot'pi'n 14 by which thedever is pivotally carried; The lever is suitably curved in order that it maybe pivotallyimoved fro'r'n the open or releasing position shownin Fignre 5 to its 'locking position shown in "Fig- :u-re 3 wherein thelever is indicated 'asfpo'sivtioned closely. adjae'entthe Outer surface of the nreua'tely curvedi-mid'dlefportion'19s V This devieefis alsoprovided with am'eineach fork 16 is apertured to -re'cei've the" her which is adapted to have engagement with both the lever and the other clamp part so that the two clamp parts may be closely drawn together firmly to embrace a wheel spoke and thus to hold the ,tire. chain in its position across the tread ofthe wheel.

placed in its double-engaging position and the clamping lever is moved to clamping position as shown in Figure 3, the plane of the two engagements must pass through the V pivotal axis of the clamping lever. In short,

"will readily show that, when the base 18 is engaged with the hook 8,-the plane which includes the engaged base and the pivotal axis of the link will be at the left in the release position; and that movement of the lever to clamping position" causes this plane of hook and lever engagements to pass through the :axis of theipivot pin 14 of; the lever. 7 Otherwise stated, the pivot pin 14' passes between the two legs 20 of the link to assume the position shown in Figure 3. Obviouslyywhen the lever 1s inclamping position, the hook 8 exerts a pull on the link which in turn tendsto pull the lever'more closely against the adjacent outer facejof the lever part of the clamp; Again, when the lever is manually moved by its terminal -h andle'21 toward releaseposition and the pivot pin 14 has passed through the link legs, the pullexerted on the link tends to force the lever about its pivot away from the lever part. c a Y r I Each clamp part is provided with a preferably integraldepending ear 2-2 which is slightly offset from the part to provide space for the usual felly 23; Each ear is formed with a pair ofapertures 24 to receive and demountablv to retain the terminal links 25 of the tire aha-i116.

. .Bufiers maybe carried on the interior .faces of the middle portions 7 and lO'and, as here shown, they -preferably extend over thelower face of the middle-portions of the two parts and terminate adjacent the inner -faces ofthe offset ears, These buflers are i formed of a resilient-material"and protect the finish not. only of the spokes but also of the adjacent felly surface.- Rubber is the preferred material/employed as it readily I 7 Further, thisnovel member is con! structed and mounted so that when it is' lends itself to the novel means of securing i the buffers to theclanip parts. Apertures 26 are formed in the middle portions 7 and 10 and also in the ears 22. These apertures are outwardly enlarged in order that studs 27 may be received and held therein. These studs 27 are integral with-the rubber buffers,

being formed while the' material is in the plastic statep Theenlarged headset the studs are thus countersunk, as shown in Flg.

a and function'securely'to hold the buffers in place on the two clampparts. 7

These buffers are adapted to. contactWith the spoke and not'only protect the-spoke finish but also to havea'n additionalfun ction. The resilience of the rubber under the compressive stress constantly exerts an outwardly thrusting force upon the two clamp parts when in working position. .Such force is advantageous when the clamping lever-sis moved towardreleasef'positionyso that its pivotal axis has passed'throu'gh the linklegs, because this forcethen functions to impart an opening moment to the clamping lever. -An easily opening-clamping lever is thus provided for this novel anti-skid device Having thus described my inventionpwhat .I claim as new, and desire-to secure byLetters-Patent, isi l 1 v r 1. An antiski'd device-for wheels, compris-,-

ing a traction element, a two-part clamp connected thereto;- and engageableiabout a spoke'of the wheeladjacent the fellythereof, means releasably connecting the par'ts' of the clamp including a' clampinglever foldable against onepart of the-clamp lengthwise of V the telly so that its free end will" lie suban opening e t laterally-ref the wheel. o- ,i

prising a'traetion element, a two-part spoke clamp connected thereto, each part having an arcuate seat for engaging about a spoke of the wheel and an outwardly depending ear, a cushioning liner for each part having integral means of securement extending through apertures said part, and means for attaching the clamp to a spoke;

3; An antiskid device comprising'atraction'element, and a two-part clamp to which said element is attachedone part havinga hook at one end and an aperture 'at'the opposite end, and the other part'having a hook at one end. engageable in the aperture and a tightening leverpivoted on the'oppd site end for folding against'its part with its stantially between adjacent 'spokes 'and ne-- 2. An antiskid device for wheels; com

free end overlying 'the'hook and aperture;

connection "and extending therebeyo'ndflsuh H 7 stantially in the plane" ofthe wheel. and a link pivoted to the lever for 'detachably rengaging over the first hook end;

In witness whereof, I have hereunto set my'hand this 4th day of September, 1920; WILLIAM BERNDT; 

